Facebook.com Now Accounts for Nearly 1 in 4 Online Display Ads in U.S.

RESTON, VA, November 8, 2010 – Comscore, Inc. (NASDAQ: SCOR), a leader in measuring the digital world, today released an overview of the U.S. online display advertising market for Q3 2010, which showed strong gains following softness for much of 2009. Data from the Comscore Ad Metrix online advertising intelligence service indicated that nearly 1.3 trillion display ads were delivered to U.S. Internet users during the third quarter, marking a 22-percent increase versus year ago.

*Display ads include static and rich media ads; excludes video ads, house ads and very small ads (< 2,500 pixels in dimension)

“The U.S. online display advertising market exhibited considerable strength in the third quarter with nearly 1.3 trillion ad impressions delivered,” said Jeff Hackett, Comscore senior vice president. “Just one year ago we were still in the midst of an advertising recession, but several growth drivers have contributed to sustained improvements over the past few quarters. The ability to buy specific audiences is enabling a greater number of display ads to be delivered on target, display formats are improving at a rapid rate, and the quality of creative is getting better every day. As publishers prove the value of online display ad campaigns, digital should continue to carve out a bigger piece of the advertising pie.”

The average U.S. Internet user was delivered more than 6,000 display ads over the course of the quarter.

109 different advertisers delivered at least 1 billion display ad impressions during the quarter, up from 76 last year.

About ComscoreComscore, Inc. (NASDAQ: SCOR) is a global leader in measuring the digital world and preferred source of digital marketing intelligence. For more information, please visit www.comscore.com/companyinfo.